Frequency stabilization of Nd:YAG lasers to 133Cs2 sub-Doppler lines near 1064 nm

E. Inbar*, V. Mahal, A. Arie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Sub-Doppler lines of Cs2 were investigated with a Nd:YAG laser. Modulation transfer spectroscopy and FM spectroscopy were applied to yield error signals that were used for absolute stabilization of the laser frequency. The frequency stability was characterized with an 12-locked dual-wavelength Nd:YAG frequency reference. The root Allan variance of the beat frequency reached a minimum of 1.3 × 10-11 (beat frequency fluctuations of 3.65 kHz) for a measurement time of 20 s. Absolute frequencies of several Cs2 lines were determined with an accuracy of ∼1 MHz. Further improvement in sensitivity was demonstrated by insertion of the absorption cell into a Fabry-Perot cavity. While the laser was locked to the cavity, the cavity length was modulated and the transmitted probe beam was detected at the third harmonic of the modulation frequency.

Original languageEnglish
Pages (from-to)1598-1604
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Volume13
Issue number7
DOIs
StatePublished - Jul 1996

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